The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2011
Filed:
Apr. 27, 2006
Erin A. Handgen, Ft. Collins, CO (US);
Patrick Knebel, Ft. Collins, CO (US);
Erin A. Handgen, Ft. Collins, CO (US);
Patrick Knebel, Ft. Collins, CO (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Coherency directory updating is provided in a multiprocessor computing system. A plurality of memory resources have a directory, and are operably connected to an interconnect fabric. A cell is operably connected to the interconnect fabric. The cell has a cache including an entry for each of a plurality of coherency units, each coherency unit included in a memory block representing a contiguous portion of the plurality of memory resources. A controller is operably connected to the interconnect fabric. The controller is configured to control a portion of the plurality of memory resources, and has a comparator configured to identify whether a memory block is local. If the memory block is local, the controller is configured to set a state of the directory to exclusive for a write transaction. If the memory block is not local, the controller is configured to set the state to invalid for a write transaction.